Kite for the head ropes of trawl nets and similar fishing nets



July 22, 1952 J J. .W. PH|LLIPS 2,603,904

KITE FOR THE HEAD ROPES 0F TRAWL NETS AND SIMILAR FISHING NETS Filed Dec. s1, 1949 s Shets-Sheet 1 &

INVE/VTO/Q Tafilv MILL/49M PHILLIPS July 22, 1952 J. W. PHILLIPS KITE FOR THE HEAD ROPES OF TRAWL NETS AND SIMILAR FISHING NETS s Sheets-Sheet 2 Filed Dec. 51, 1949 ,body at least partially annularly surrounded by a lifting effect, especially. ..;do,wnwardly.curved.

transverse ends.

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' KITE FOR THE HEAD sores F TRAWL NETS-AND SIMILAR FISHINGMNETS John willia m'P hillips, OSQ Qb neQ L Q n;

- England:

. ApplicationDecember 31, 1949,, Se ial Q In. Great Britain February 2, 1949 Thisinventionrelates to buoyant kites for sustaining the head ropesof trawl nets, and similar fishing nets, and its object is to provide a buoyantkite with means or ensuring an effective lifting action whilst the net, to which it is attached t and which it buoyantly sustains, is drawn through the water. c v

The buoyant kite, for attachment to the head rope of a fishing net, consists of a'hollowfloat fin flange and provided centrally beneath the flange with means for attachment to the ,head rope. According to the invention this fin flange tapers outwardly and although substantially radial is downwardly inclined and preferably downwardly curved with upper and lower surfaces merging smoothly into thehollow float body. The fin flange is preferably located around the lower portion of the hollow float body.

The attachment of the centre of the lower portion of the hollow float body to the head rope, will cause the hollow float body to tilt when drawn through the water, and thus incline. the fln flange to exert a hydroplane lifting effect. a

The downward'inclination of the fin flange has been. found to provide an improved hydroplane when the fln flange is The hollowfloat body could attachedby a [central eye directly to the head rope. However,

the tilting of the buoyantkite is promoted, if the means for attachment to the head rope, such as eyes, are provided at the endof. a short lever arm or arms projecting atthecentre or along the centre line of the lower. portionofthe hollow The location of the fin flange around the lower portion of the hollow float body, exposes the fin I flange, to exert a hydroplane effect, to water not yet disturbed bythe dragging offthe float therethrough. 3 I v v I The hollow floatbody may have a substantially circular cross.section, so as to beef globular configuration or, in the case of a horizontally 'elon gated float, of corresponding substantially cylindrical configuration, with convex or straight .The hollow float body f'rnay be elongated 'verti- The fln flange.wholly or partially surrounds 'thefhollowYfloat-body in afllpl'ane perpendicular to the lever arm; Preferably, this planejisoflset "the equal heating of both interweldedsurfaces.

With a horizontally elongated 'float, which would be attached to the bosom portion of the head rope, two or more laterally separated lever arms are provided to keep the float parallel'with the head rope.

f' The lever arm or lever arms are located respectively at the centre of the float body or along the longitudinal centre line of a gated float body. a I

Representative examples of buoyant kites are shown in the accompanying drawings, in which:

Fig. 1 is an elevation, and V Fig. 2 isa transverse section of a globular buoyant kite With a downwardly curving flange, offset relatively to and beneath an equatorial welded Fig. 3: is an elevation; partlyiinjsection, of a globular? buoyant kite with a downwardly inclined flange, offset relatively to and'above an equatorial welded joint. Q

On a smaller scale": Fig. 4 is an elevation, and

"Fig- 5 is a 'planiof a horizontally elongated globular kite "shownfin Fig. 6 is an elevation, {partly infs'ection, of a vertically elongated buoyant kite, and I .Figs. 7 and 8 are'alternative plans thereof. j

' I Referring [more particularly to Figs. 1" anaz, a is a globular hollow annular flange b.

body provided with a narrow Centrally beneath the flange 'b theii flanged.

body a is provided with a leverarm c, projecting perpendicularly to the flange b and terminating inaneyed. f, f Such a buoyant kite .is attached to the head rope at the wings of the trawl net, but can be attached to the head rope at the bosom of the net. g

However, along the bosom of the netan oval or a rectangular buoyant kite asshown in Figs. f 4 and 5 can beattached to the headrope. With such a horizontally elongated buoyantkite, two

jlever arms 0 with eyesd are provided equidistantly 'from the ends along the longitudinal aXis of the elongated buoyantkite; t

;The lever arm c whilst sufficiently long to tilt the buoyant kite-sufiiciently when dragged by the 'h ea d" rope, should bebf such restricted lengthas not't'o project-unduly and be liable 'to beeasily horizontallyelon- I n upperipuppf thebody ais ex damaged on deck and when shooting the trawl merging smoothly into and at least partially suror hauling it inboard, as the kites are liable to be rounding said float body, and means on said float subjected to rough usage by impact with steel body for attachment to the head rope medianly foot rope rollers, called bobbins. beneath said flange.

The flanged hollow buoyant kites are prefer- 5 3. A buoyant kite for attachment to the head ably formed of two interwelded cast, for instance rope of a fishing net, consisting of a hollow float die cast pups eof tseawater-resistant aluminium fibody a substantially radial buttdpwnwardly ina l y. l lhebu afitkit we ma be {arme arftlititq olliwarlli tt p i mh 0n and of interwelded cast or pressed sheet steel 'mergirigsmoothly intoa'nd'at' least partially surhardened by heat treatment, or sheet aluminium g0, n a the lower portion of s fl dy and alloy, cups. Alternatively they may be synthetic means 011 Said fl y for c men to the resin castings. 1 '1' v ceheaderopeimedianly b eath sa d flan The buoyant kite shown in Figs. land 2- has'an 4 A huoyantsikite for attachment to the head almost spherical globular bod a -andWan-out- .fltope of afish n t consisting of a h0 0w float wardly tapering annular fiahgebThe flangb gmgbody, "a 'substantially radial but downwardly of this buoyant kite although substantially ra- 'fllrved outwardly tapering fi flange 01 a d dial curves downwardly, and-isoasetbeneath an 1 m rgi m th xint a a l st pa t ally u equatorial welded joint e. rounding 'theilower portion of said float body, and

As will be seen in the drawings, th g e u mean on said fl y for attachment o h lower surfaces of the flange 1) merge smoothly 20 head Tdpe mediamy-bimeath Said flange gymtqgthecglphular body f I V 4 5. A buoyant kite for attachment to the head 'iaufe lqw rgpoitioaoithe body agioi Liters-fo fi hin -t a .c'ohsittiriaofEli-Substantially fi' fgfiithd i lw flffd f t' m -u in is herically globulaifl hollow-float body-{a substana t'; ,.the.lower' e e portion; Blithe ta y "r dia t'f do n inclinedoutwardly s' hown, be ast" parat-ely and 251, ape ine'fir an eonandmereins smoo'thlir in o e'cied t 1-, eastern f' r {a d atde'ast partiallysurrounding-said float body, v I jj ntiioriother ntf" and-meanstnsaia-fioat bddy-for attachment to l st'ad..1ofi th ,iiownwa'ridlyi inolin dj an ejlb' .7 the hea rope medianly beneath said flan e. he hgpfi'st b' iegm e qu figi fi- 'A buqyallt kite for -attachme'nt;to' the:-head the 'flange'b 'can be ofisetabove rope-of a' flshing netwconsisting cf a substanmshown in 3. ,Jlhislocatesj 'I'h'e'hollow body 'aof tfetuoyan ki of being spherically globulanassho 2 and 3 can be elongatedf" 'icjall beneath sai'df flange.

oyant lliite for attachment-to the head oi a sutsta rope 0 fishing net'fcoiisi'stin 3 spherically, globular hollow fl "atbody shown ti lyqgaaial but d wnwardlyeu yee dut "kite-'forattachment to the ead "Theskirt' Q can be cylindrical andthe ri ange agergn s usag 1 a l q ttlel r-a shown n c a iar a a 'dat'leastpartiallysurrounding 's'azmtclx iz m mma s-maiz 1'. A-buoyant kite'for att .IQ

is12.11amcalls: obu a ;hpllpwlfloa a v ti'ally 'radial but downwardly cur tially radial but downwardly inclined outwardly tapering fin flange on and merging smoothly into and at least partially surrounding the lower por-, tion of said float body, and a short lever arm on said float body terminating in means for attachment to the head rope medianly beneath and perpendicular to said flange.

12. A buoyant kite for attachment to the head rope of a fishing net, consisting of a substantially spherically globular hollow float body, a substantially radial but downwardly curved outwardly tapering fin flange on and merging smoothly into and at least partially surrounding the lower por--r tion of said float body, and a short lever arm on said body float terminating in means for attachment to the head rope medianly beneath and perpendicular to said flange.

13. A buoyant kite for attachment to the head rope of a fishing net, consisting of a horizontally elongated hollow float body, a substantially radial but downwardly inclined outwardly tapering fin flange surrounding and merging smoothly into the lower portion of said float body, and means for attachment to the head rope on and along the major axis of said float body beneath said flange.

14. A buoyant kite for attachment to the head rope of a fishing net, consisting of a horizontally elongated hollow float body, a substantially radial but downwardly curved outwardly tapering fin flange surrounding and merging smoothly into the lower portion of said float body, and means for attachment to the head rope on and 6 along the major axis of said float body beneath said flange.

15. A buoyant kite for attachment to the head rope of a fishing net, consisting of a horizontally elongated hollow float body, a substantially radial but downwardly inclined outwardly tapering fin flange surrounding and merging smoothly into the lower portion of said float body, and short lever arms terminating in means for attachment to the head rope on and along the major axis of said float body beneath'and perpendicular to said flange.

16. A buoyant kite for attachment to the head rope of a fishing net, consisting of a horizontally elongated hollow float body, a substantially radial but downwardy curved outwardly tapering fln flange surrounding and merging smoothly into the lower portion of said float body, and short lever arms terminating in means for attachment to the head rope on and along the major axis of said float body beneath and perpendicular to said flange.

JOHN WILLIAM PHILLIPS.

REFERENCES CITED The following references are of record in the flle of this patent:

UNITED STATES PATENTS Number Name Date 612,109 Hutchins Oct. 11, 1898 2,110,596 Gaede Mar. 8, 1938 FOREIGN PATENTS Number Country v Date 17,562 Sweden May 7, 1904 537,726 Great Britain July 3,1941 

